Hi Mark,
Sorry forgot to add that bit. I'm using splitter on the UK extracts from geofabrik.
OK.
The most recent trials have used r1099, but before that I was using r1067 and r1072 all with the same results.
OK.
As I say going from one tile to an adjacent one works; but anything with an intermediate tile fails. I've tried various routes so I believe the problem is general (for me at least!) rather than a specific road that is causing the problem.
Testing with mapsource on tiled maps of the UK and the Netherlands, I can route across multiple tiles (in one case, I counted 7 tiles). However, mapsource often gives up when trying to route long distances (especially with the UK map compared to the NL) so I wonder if there's some complexity contstraint that we're not adhering to. But to answer your original question, multiple tiles can be routed across. Cheers, Mark